write 5 differences between T lymphocyte cell and B lymphocyte cell. 2-What is the action of Ciliary Escalator system in the respiratory epithelium to prevent infectious diseases?

1-Please write 5 differences between T lymphocyte cell and B lymphocyte cell.
2-What is the action of Ciliary Escalator system in the respiratory epithelium to prevent infectious diseases?
3-What is the main action of Interferon alpha?
4-Why we do not use BCG vaccine for Tuberculosis in our country?
5-What are the differences between exotoxins and endotoxins?
6-Why Clostridium difficile represents a very difficult health problem in our country? How do you explain this situation?
7-Why we still do not have any Hepatitis C vaccine?
8-What are the serological markers for Chronic Hepatitis B?
9-What is the morbidity and mortality of Pneumonia secondary to Streptococcus
pneumoniae in our country?
10-What is the general prognosis of Herpes simplex type 2 in our country?